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公开(公告)号：US4547393A
公开(公告)日：1985-10-15
申请号：US618803
申请日：1984-06-08
申请人： Takamitsu Asai , Tatsuji Kitamoto , Goro Akashi
发明人： Takamitsu Asai , Tatsuji Kitamoto , Goro Akashi
CPC分类号： G11B5/845 , G11B5/70626 , G11B5/7085
摘要： The present invention relates to an improved method for preparing a magnetic recording method having excellent magnetic orientation comprising the steps of (1) dispersing ferromagnetic fine particles which are plate-shaped and which have an axis of magnetization perpendicular to the plates of the particles in a binder and (2) coating a magnetic coating layer on a non-magnetic support wherein the method comprises, after coating the magnetic coating layer and before drying it, subjecting the surface of the magnetic layer to a magnetic field from the direction perpendicular to the support to produce a magnetic orientation while contacting the surface of the magnetic layer with a flexible smoothening sheet.
摘要翻译： 本发明涉及一种制备具有优异磁性取向性的磁记录方法的改进方法，包括以下步骤：（1）将板状的铁磁细颗粒分散在其中，并将磁性轴垂直于颗粒的平板 粘合剂和（2）在非磁性载体上涂覆磁性涂层，其中所述方法包括在涂覆磁性涂层之后并在其干燥之前，使磁性层的表面从垂直于载体的方向受到磁场 以在磁性层的表面与柔性平滑片接触的同时产生磁性取向。
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公开(公告)号：US4515857A
公开(公告)日：1985-05-07
申请号：US375690
申请日：1982-05-06
申请人： Tatsuji Kitamoto , Goro Akashi
发明人： Tatsuji Kitamoto , Goro Akashi
CPC分类号： G11B5/852 , G11B5/70642 , G11B5/714 , G11B5/845 , Y10S428/90 , Y10T428/256 , Y10T428/257 , Y10T428/265
摘要： In a magnetic recording medium comprising a non-magnetic support and a magnetic recording layer coated thereon in which ferromagnetic particles are dispersed in a non-magnetic binder, the ferromagnetic particles are cubic particles of 0.3 or less micron and are subjected to an orientation treatment in the vertical direction to the recording surface, whereby the output and S/N ratio in a high density recording are increased.
摘要翻译： 在包含非磁性载体和涂覆有磁性颗粒的磁记录层的磁记录介质中，铁磁颗粒分散在非磁性粘结剂中，铁磁性颗粒是0.3微米或更小微米的立方颗粒，并进行取向处理 到记录表面的垂直方向，从而增加了高密度记录中的输出和S / N比。
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公开(公告)号：US4501225A
公开(公告)日：1985-02-26
申请号：US589701
申请日：1984-03-15
申请人： Makoto Nagao , Akira Nahara , Goro Akashi
发明人： Makoto Nagao , Akira Nahara , Goro Akashi
CPC分类号： C23C14/562 , C23C14/24 , G11B5/851
摘要： A magnetic metal deposition material contained in a hearth is heated and evaporated in a vacuum to form a flow of vapor, which is then ionized and converged toward a predetermined deposition surface of a flexible substrate. The flexible substrate is moved obliquely downwardly along a convex course by sliding contact with the curved surface of a fixed curved guiding body between a pair of guide rollers located at different heights above the hearth. The fixed curved guiding body communicates with a coolant source for cooling the substrate moving in contact therewith and may be provided with oscillators. Thus a thin film of the magnetic metal is deposited on the convex surface of the substrate.
摘要翻译： 包含在炉床中的磁性金属沉积材料被加热并在真空中蒸发以形成蒸气流，然后将其蒸发并会聚到柔性基板的预定沉积表面。 通过与位于炉膛上方不同高度的一对导向辊之间的固定弯曲导向体的弯曲表面滑动接触，柔性基板沿着凸面向斜下方移动。 固定的弯曲引导体与冷却剂源连通，用于冷却与其接触移动的衬底并且可以设置有振荡器。 因此，磁性金属的薄膜沉积在基板的凸面上。
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公开(公告)号：US4482578A
公开(公告)日：1984-11-13
申请号：US505509
申请日：1983-06-17
申请人： Goro Akashi , Tatsuji Kitamoto , Tsutomu Okita
发明人： Goro Akashi , Tatsuji Kitamoto , Tsutomu Okita
IPC分类号： G11B5/702 , C09D5/23 , C09D101/00 , C09D101/08 , C09D133/04 , C09D175/00 , G11B5/70 , G11B5/714 , G11B5/842 , G11B5/845 , B05D3/06
摘要： A method for preparing a magnetic recording medium comprising a non-magnetic support having coated thereon a magnetic layer containing plate-shaped ferromagnetic fine particles oriented perpendicular to a plane of the surface of the support, the process comprising the steps of:coating the non-magnetic support with a coating composition wherein ferromagnetic fine particles are dispersed in a solution comprised of a compound polymerizable by radiation with electron beams and a solvent, said particles being plate-shaped and having an axis of easy magnetization perpendicular to a plane of the plate-shaped particles;orienting the ferromagnetic fine particles perpendicular to the surface of support while the coating composition is undried;radiating the composition with electron beams; anddrying the composition by removing the solvent.
摘要翻译： 一种制备磁性记录介质的方法，包括其上涂覆有包含垂直于所述载体表面的平面定向的板状铁磁细颗粒的磁性层的非磁性载体，所述方法包括以下步骤： 具有涂层组合物的磁性载体，其中铁磁细颗粒分散在由通过辐射与电子束和溶剂聚合的化合物组成的溶液中，所述颗粒是板形的并且具有垂直于板状平面的平滑的磁化轴线， 形状颗粒; 在涂料组合物未干燥的同时使铁磁细颗粒垂直于载体表面定向; 用电子束辐射组合物; 并通过除去溶剂干燥组合物。
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公开(公告)号：US4454836A
公开(公告)日：1984-06-19
申请号：US498441
申请日：1983-05-26
申请人： Goro Akashi , Ryuji Shirahata
发明人： Goro Akashi , Ryuji Shirahata
CPC分类号： C23C14/562 , G11B5/851 , H01F41/20
摘要： An apparatus for vacuum evaporating magnetic material onto a base. Cylindrical cans are disposed parallel to one another and rotated either in the same or opposite directions. A tape-shaped base is wound around the cans passing from an upper vacuum chamber to a lower vacuum chamber. A vacuum evaporation source is positioned in the lower chamber and directed to the tape-shaped base in a predetermined area on both sides of a gap between the cans or a line contact area between the cans.
摘要翻译： 一种将磁性材料真空蒸发到基底上的装置。 圆柱形罐彼此平行设置并沿相同或相反的方向旋转。 将带状基部缠绕在从上部真空室传递到下部真空室的罐体上。 真空蒸发源被定位在下室中并且在罐之间的间隙的两侧的预定区域或罐之间的线接触区域之间被引导到带状基部。
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公开(公告)号：US4442159A
公开(公告)日：1984-04-10
申请号：US382336
申请日：1982-05-26
CPC分类号： G11B5/716 , Y10S428/90 , Y10T428/24942 , Y10T428/256 , Y10T428/257 , Y10T428/265
摘要： A magnetic recording medium which comprises a non-magnetic support having thereon two or more magnetic layers comprising magnetic particles in a binder. The magnetic layer(s) other than the topmost layer comprises needle-shaped magnetic particles. The topmost layer comprises plate-shaped magnetic particles which have axes of easy magnetization perpendicular to the individual plate planes and the plate planes are oriented substantially parallel to the surface of the magnetic layer.
摘要翻译： 一种磁记录介质，其包括其上具有两个或更多个包含粘合剂中的磁性颗粒的磁性层的非磁性载体。 除了最上层之外的磁性层包括针状磁性颗粒。 最顶层包括板状磁性颗粒，其具有垂直于各个板平面的易磁化的轴，并且板平面基本上平行于磁性层的表面取向。
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公开(公告)号：US4242783A
公开(公告)日：1981-01-06
申请号：US923751
申请日：1978-07-11
申请人： Kenji Watanabe , Goro Akashi
发明人： Kenji Watanabe , Goro Akashi
摘要： An elastic calender roll for use in a super calender for magnetic tape is disclosed, which comprises a roll core and a roll portion which is composed of a fibrous material molded with a plastic material. The fibrous material has a better heat resistivity than that of the plastic material and the surface portion of the calender roll is of the plastic material and has a Shore hardness of at least 80 degrees.
摘要翻译： 公开了一种用于磁带的超级压延机的弹性压延辊，其包括由芯体和由塑料材料模制的纤维材料组成的辊芯。 纤维材料具有比塑料材料更好的耐热性，并且砑光辊的表面部分是塑料材料，并且肖氏硬度至少为80度。
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公开(公告)号：US4071654A
公开(公告)日：1978-01-31
申请号：US608500
申请日：1975-08-28
申请人： Hiroshi Ogawa , Kazuhide Ishii , Matsuaki Nakamura , Yasuo Tamai , Goro Akashi
发明人： Hiroshi Ogawa , Kazuhide Ishii , Matsuaki Nakamura , Yasuo Tamai , Goro Akashi
CPC分类号： G11B5/70 , Y10S428/90 , Y10T428/265 , Y10T428/266 , Y10T428/269 , Y10T428/31
摘要： A magnetic recording material comprising a non-magnetic flexible support having thereon a magnetic recording layer comprising a ferromagnetic powder dispersed in a binder, the surface of the non-magnetic flexible support having the magnetic recording layer thereon satisfying an S-factor expressed by the following relationship (I-1) ##EQU1## wherein S.sub.1 is the surface roughness in .mu.m of the surface of the non-magnetic flexible support having the magnetic recording layer thereon and d is the thickness in .mu.m of the magnetic recording layer, with the thickness (d) of the magnetic recording layer being about 5 .mu.m or less, and the back surface of the non-magnetic flexible support opposite that having the magnetic recording layer thereon satisfying an S-factor expressed by the following relationship (I-2) ##EQU2## wherein S.sub.2 is the surface roughness in .mu.m of the back surface of the non-magnetic support opposite that having the magnetic recording layer thereon and d is as described above.
摘要翻译： 一种磁记录材料，包括非磁性柔性载体，其上具有分散在粘结剂中的铁磁性粉末的磁记录层，所述非磁性柔性载体的表面上具有满足下列条件的S因子 关系（I-1）
（I-1）其中S1是其上具有磁记录层的非磁性柔性载体的表面的表面粗糙度，其中d是磁体的厚度 记录层，其磁记录层的厚度（d）为约5μm以下，非磁性柔性支持体的背面与上述磁记录层的背面相当，满足下述S表示的S因子 关系（I-2） （I-2）其中S2是与其上具有磁记录层的非磁性载体的背表面的表面粗糙度（μm），d为 上面有肋。 -
公开(公告)号：US4059463A
公开(公告)日：1977-11-22
申请号：US693669
申请日：1976-06-07
申请人： Masashi Aonuma , Tatsuji Kitamoto , Goro Akashi
发明人： Masashi Aonuma , Tatsuji Kitamoto , Goro Akashi
摘要： Ferromagnetic powders comprising cobalt and/or nickel are produced by reducing cobalt and/or nickel salts in an aqueous solution containing hypophosphite ions while applying a magnetic field.
摘要翻译： 包含钴和/或镍的铁磁粉末通过在施加磁场的同时还原包含次磷酸根离子的水溶液中的钴和/或镍盐来制备。
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公开(公告)号：US4030685A
公开(公告)日：1977-06-21
申请号：US605046
申请日：1975-08-15
申请人： Osamu Suzuki , Goro Akashi , Akira Kasuga , Kenji Sega
发明人： Osamu Suzuki , Goro Akashi , Akira Kasuga , Kenji Sega
IPC分类号： G11B23/087 , G11B23/10
CPC分类号： G11B23/087
摘要： An elastic flexible belt is tensioned around feed-out and take-up tape convolutions in a magnetic tape magazine to press the convolutions inward and tightly wind the tape on cores. By the tension of the flexible belt provided around the tape convolutions, the tape is tightly wound on the cores and stably fed in the magazine, and accordingly, the edges of the tape are effectively aligned in the convolutions.
摘要翻译： 弹性柔性带在磁带盒周围的送出和卷取带卷绕周围被张紧，以将卷入内压并将带紧紧地卷绕在芯上。 通过设置在带卷绕周围的柔性带的张力，带被紧密缠绕在芯上并稳定地馈送到盒中，因此，带的边缘在卷积中有效地对准。
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